Frank e



FRANK E. DOUGHTY,

PATENT OFFICEo OF NEW YORK, N. Y.

STITCH-RIPPER..

SPCIPIATION' forming part of Letters Patent No. 370,456. dated September 2'7`, 1887.

Application filed February 28, 1857. Serial No. 229,234.

To all wwm it may concern:

Be it known that I, FRANK E. DoUGHTY, a citizen of the United States, and a resident of the city, county, and State of New York, have invented a new and useful Improvement in Stitch-Rippers, of which the following is a complete and exact specification.

In the drawings is shown a plan view of my invention, Figure l representing the ripper when the knife is in its recess or groove, Fig. 2 represent-img the ripper when the knife is in an upright position. Fig. 3 represents a top view of the upper arm of the ripper, showing recess.

The object of my invention relates to improved means for facilitating the ripping of stitchesin garments and other similar articles.

The chief superiority of my invention over others of a similar character consists in the circumstance that, while it is just as effective in its operation, it can be cheaply construt'ted' and is more simple in its arrangements.

In the drawngs, A indicates a clamp which is provided in its lower end with the thumbscrew B. In the upper arm of Ithe clamp is a recess or groove, M,which extends throughout the arm from top to bottom, and between its sides is pivoted at its outer end the cuttingknife O. This knife is provided at its lower end with the lugs or square projections D, and When not in use it can be pushed down into the recess M. These lugs or projections D serve the purpose of preventing any rocking motion in the knife C when it is in use, and provide the operator with means for throwing the knife quickly out of the recess or groove M.

In using this ripper the lower lug is pressed in an upward direction and the upper lug in a downward direction by the fingers, and the k nife is thus thrown from the recess or groove M into an upright position, where it will remain during theloperation of ripping. The

(No model.)

cutting-knife O having been thrown into au npright position, the clamp A is secured to a table or other article by the operation of the thumb-screw B, and the knife is thus held stationary.

The chief feature of my invention, wherein itl surpasses those of a similar Character, is that,

by the operation of the thumb-screw B on the clamp A in fiXing the latter rigidly to the table or other article, the cutting-knife O is held in an upright and stationary position, and is prevented from moving, rocking, or changing its position while the process of ripping the stitches is going on.

Vhat I claim as new, and desire to secure by Letters Patent, is

1. A new and improved stitch-ripper,which consists of the clamp A, the thumb-screw B, and a cutting knife, O, having lugs D on its lower end, and pivoted to the upper arm of the clamp,whereby, when the clamp is secured to a table or other article by the operation of the thumb-screw, the cutting-knife shall bc held in an upright and stationary position during the process of ripping, substantially as described and set forth. i

2. A new and improved stitch-rip'per, which consists of the clamp A and the thumb-screw B, the upper arm of the clamp being provided with a recess or groove, M, at one end of which is pivoted the cutting-knife O, provided at its lower end with the lugs D, Whereby,when the clamp is secured to a table or other article by the operation of the thumb-screw, the Cuttingknife shall be held in an upright and stationary position during the process of ripping, substantially as described and set forth.

FRANK E. DOUGHTY.

Witnesses:

JOHN S. MILLER, NICK SoiatoENn 

